[Bug 922342] [NEW] firefox lags when I try to close a single opened tab

[Visor2580]

Public bug reported:

When several tabs are opened and I try to close one, everything works
fine. But only one tab is opened and I try to close it, Firefox doesn't
responce for ~10 seconds, then it showes an error (something about
javascript scenario), closes the tab and opens a new tab, which shows my
homepage.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: firefox 9.0.1+build1-0ubuntu0.11.10.2
ProcVersionSignature: Ubuntu 3.0.0-15.26-generic 3.0.13
Uname: Linux 3.0.0-15-generic i686
NonfreeKernelModules: wl
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
ApportVersion: 1.23-0ubuntu4
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  angstrem   1866 F.... pulseaudio
BuildID: 20111228084953
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf2800000 irq 42'
   Mixer name	: 'Realtek ALC269VB'
   Components	: 'HDA:10ec0269,17aa6008,00100100'
   Controls      : 14
   Simple ctrls  : 9
Channel: release
Date: Thu Jan 26 22:45:52 2012
EcryptfsInUse: Yes
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
IpRoute:
 default via 10.22.0.1 dev eth0  proto static 
 10.22.0.0/16 dev eth0  proto kernel  scope link  src 10.22.12.189  metric 1 
 169.254.0.0/16 dev eth0  scope link  metric 1000
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=9.0.1/20111228084953 (Running)
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/29/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 39CN16WW
dmi.board.asset.tag: Tag 12345
dmi.board.name: MoutCook
dmi.board.vendor: LENOVO
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnLENOVO:bvr39CN16WW:bd07/29/2010:svnLENOVO:pnINVALID:pvrLenovoB560:rvnLENOVO:rnMoutCook:rvrNotApplicable:cvnLENOVO:ct10:cvrN/A:
dmi.product.name: INVALID
dmi.product.version: Lenovo B560
dmi.sys.vendor: LENOVO

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 oneiric running-unity

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Title:
  firefox lags when I try to close a single opened tab

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